The correct option is C. Genetic inheritance. Explanation of the Correct Answer Genetic inheritance is the process by which genetic information is passed from parents to their offspring. This process is fundamental to the field of genetics and explains how traits and characteristics are transmitted through generations.

1. Mechanism of Genetic Inheritance:
2. Genetic information is stored in DNA (deoxyribonucleic acid), which is organized into structures called chromosomes. Humans, for example, have 23 pairs of chromosomes, with one set inherited from each parent.
3. During reproduction, gametes (sperm and egg cells) are formed through a process called meiosis, which reduces the chromosome number by half. When fertilization occurs, the resulting zygote has a complete set of chromosomes, half from each parent.
4. The specific alleles (variations of a gene) that an offspring inherits from its parents determine its traits, such as eye color, height, and susceptibility to certain diseases.
5. Mendelian Inheritance:
6. The principles of genetic inheritance were first described by Gregor Mendel in the 19th century. He established the laws of segregation and independent assortment, which explain how alleles are distributed to offspring.
7. According to Mendel's laws, each parent contributes one allele for each trait, and these alleles can be dominant or recessive, influencing the phenotype (observable traits) of the offspring.

Explanation of Why Other Options Are Incorrect A. Mutation: - A mutation is a change in the DNA sequence that can lead to new traits or variations. While mutations can introduce new genetic information into a population, they do not describe the process of transmitting existing genetic information from parents to offspring. Instead, mutations are random events that can occur during DNA replication or due to environmental factors. B. Natural selection: - Natural selection is a mechanism of evolution that explains how certain traits become more or less common in a population based on their advantages or disadvantages in a given environment. While natural selection acts on the genetic variation present in a population, it does not describe the process of inheritance itself. It is more about the survival and reproduction of individuals with certain traits rather than the transmission of genetic information. D. Genetic drift: - Genetic drift refers to random changes in allele frequencies in a population, particularly in small populations. It is a mechanism of evolution that can lead to the loss of genetic diversity over time. Like natural selection, genetic drift does not describe the process of how genetic information is passed from parents to offspring; rather, it focuses on how allele frequencies can change due to chance events. Summary of Key Points

• Genetic inheritance is the process by which traits are passed from parents to offspring through DNA.
• It involves the transmission of alleles during reproduction, specifically through gametes formed by meiosis.
• Mendel's laws of inheritance explain how alleles segregate and assort independently during gamete formation.
• Other options (mutation, natural selection, genetic drift) describe different biological processes and do not specifically address the transmission of genetic information.

This thorough understanding of genetic inheritance is crucial for grasping the fundamentals of biology and genetics, especially in the context of evolution and heredity.